I think we know too they can be dangerous as they act as vectors for innumerable diseases, conveying germs from one host to another. I looked around for a fly to photograph, and you know, I couldn't find one, so, I'm happy about that. I had to borrow this one, Here is another appropriate poem by Paddy Lysaght from his collection "A Torrent of Versatile Verses".
A FLY IN THE OINTMENT
"Swat that fly", my hubby said,
"I cannot stand his buzz".
"For goodness sake, relax" I said,
"What is he doing to us?"
He threw a might swear at me,
He fixed me with his eyes.
"I'll kill the hoor myself", he said,
"I hate those bloody flies".
He swore once more. I answered back -
There's more to it, of course -
But that dust-up about the fly
Ended with our divorce.